Casing-elevator.



B. U. WLLAMS. CASING BLEVATOR. APPLICATION FILED Ammo, m2.

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12ERT C. WILLIAMS, OF MARICOPA, CALIFORNIA, ASSIGNOR TO AVIUEL ALLEN'GUIBERSON, JR., OF COALINGA, CALIFORNIA.

CASNG- ELEVATOR.

Application filed April 30, 1912. Serial No. 694,134.

Specification of Letters Patent.

To all whom 'it may concern.'

Be it known that l', BERT C. VVILLIAHS, a citizen of the llnlted States,residing at Maricopa, in the county of Kern and State l of California,have invented certain new and useful Improvements in Casing-'Ele vaiors;and l do hereby declare the folN lowing. to be a f'ull, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention `relates to casing elevators 'used in connection with oilwells; and it 'circular jaws 2 and 3, adapted to encircle a casing pipe.These jaws are pivotally connected at one end by a hinge and at theother end they are provided with radial flanges 5 and 6 respectively. Atthe n'iid-dle parts of the jaws radially projecting lugs 7 are providedhaving holes 8, and 9 are bails or links which engage with the holes 8,and which ail'ord a ineans tor connecting the raising and loweringmechanism with the elevator aws.

The right hand 4iiange 6 is provided with vertical slot 10, andcrossholes 11 arranged at different levels. A small vertical slot isalso termed in one side of the flange between t-he crossholes. The otherflange 5 is pro vided with two laterally projecting catches 14, ha vingbeveled end portions 15, and notches 16 on their upper sides at about.the middle of their length. These catches pass vinto the, crossholes 11when the jaws are closed, and the notches 16 come vin line with the vertical slot 10. drop latch 18 is pro vided, and is slidable vertically inthe slot 10. This latch has holes 19 having beveled upper sides 20. Thebeveled end port-ions 15 of the catches strike the beveled sides 20, andraise the latch., which subsequentlydrops into engagement,- with thenotches 1 (3.

Patented Nov. 26, 1912.

A handle 21 projects from the middle part of the latch and works in thevertical slot 12. A lug 22 is provided on the lange, over the handle 21,for the thumb to engage with when the handle is engaged by the fingers.A supporting lug 23 is provided on the upper end of the latch, and has abeveled lower side 24. This lug 23 engages with a notch 25 in the top ofthe jaw and supports the @latch The beveled surfaces are provided toprevent oil and dirt from lodging under the lug and thereby preventingthe latch from descending to its full extent. .A small.

spring 26 is arranged in a recess 27 in the top of the latch, on theother side from-the lug 23. This spring is provided with .a retainingscrew 28, and it operates to make the latch close quickly.

A casing elevator constructed in this inanner is very satisfactory inuse; v.it is not liable to get out of order; and it is very inexpensiveto construct.

What I claim is:

l. In a casing elevator, the combination, with a pair of hinged jawsprovided with opposed flanges at their free ends, one of slot andcrossholes', and the other flange being provided with laterallyprojecting catches which enter the said crossholes, of a drop latchslidable in the vertical slot and provided with holes for engaging withthe catches, and lifting devices connected to the said jaws.

2. ln a casing elevator, the combination, with a pair of hinged jawsprovided with opposed flanges at their free ends, one oit the flangesbeing provided with a vertical slot and crossholes, and the other flangebeing provided with laterally projecting catches which enter the saidcros'sholes, of a drop lat-ch slidable in the vertical slot and'provided with holes for engaging with the catches, one jaw being alsoprovided with a beveled notch at its top and the said latch being alsoprovided with a beveled lng which engages with thev beveled notch andsupports the latch in the slot, and lifting devices connected to thesaid jaws.

3. In a casing elevator, the combination, with a .pair of hinged jawsprovided with opposed flanges at their tree ends, one of the saidflanges being provided with a vertical slot and'crossholes. and thcother flange the flanges being provided with a vertical ibeing providedwith laterally projecting Catches which enter the said erossholes, of edrop leteh slidable in the/vertical` slot and v lprovided with holes forengagingwth the catches, the said latch being also provided with arecess and the sloted linnge yheilig provided with a retaining screw,aspring an' ranged in the recess between the latch and the screw endoperating to depress the latch, and lifting devices connected to thesaid jaws.

. 4. ln4 a easing elevator., the eoimbihetion,j with a pair of hingedjaws provided with opposed flanges et' their 'free ends, one of i. l theHengesigbeng providedwth e vertical guide slot` and a ei'osshole., andthe other 1 5 flange being provided with a laterally projecting catchwhich enters the orosshole, of a, drop letoh slidable in the guide slotand enga-ging automatically with the catch When the jews are closed, andlifting devices connected to the said jaws. ln testimony' whereof l haveaffixed my signature in the presence of two Witnesses.

BERT C. WILLIAMS.

Witnesses P. E. GIBBONEY,

C. V. ROGERS.

